Fast food giant KFC took a dig at rival McDonald's in a tweet inspired by US President Donald Trump's "nuclear button" one. And the Twitterati loved it so much they've retweeted it a 100,000 times aready.

Consumers at fast-food chains across the country may not be able to enjoy the full gains of the lower GST rate of 5% that kicked in from Wednesday as many restaurants are raising menu prices, citing the government’s decision to withdraw credit for taxes paid on raw material and rent.

Yum is still the largest fast food chain in the market, where it has over 7,685 outlets. Its China same-store sales have also been slowly improving, rising in the second quarter of the year on a strong showing by its KFC brand.